378221760 has 336 divisors, whose sum is σ = 1513002816. Its totient is φ = 84934656.

The previous prime is 378221747. The next prime is 378221803. The reversal of 378221760 is 67122873.

378221760 is a `hidden beast` number, since 378 + 221 + 7 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1471552 + ... + 1471808.

Almost surely, 2^378221760 is an apocalyptic number.

378221760 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378221760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (756501408).

378221760 is an abundant number, since it is smaller than the sum of its proper divisors (1134781056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378221760 is a wasteful number, since it uses less digits than its factorization.

378221760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 378221760 is about 19447.9243108358. The cubic root of 378221760 is about 723.1840466238.

The spelling of 378221760 in words is "three hundred seventy-eight million, two hundred twenty-one thousand, seven hundred sixty".